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author | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
commit | 4961e02f1999e1c3468c09b2669c94d7c3ae82a8 (patch) | |
tree | 44c15abb09d7ba5e17a9aba95ee246648b1c1a8a /drivers/base/core.c | |
parent | d14a0ebda7d3daede1a99c01527affb9ceaa4c22 (diff) | |
parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) | |
download | linux-fsl-qoriq-4961e02f1999e1c3468c09b2669c94d7c3ae82a8.tar.xz |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/base/core.c')
-rw-r--r-- | drivers/base/core.c | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 2820257..ef55df3 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -100,7 +100,7 @@ static ssize_t dev_attr_store(struct kobject *kobj, struct attribute *attr, return ret; } -static struct sysfs_ops dev_sysfs_ops = { +static const struct sysfs_ops dev_sysfs_ops = { .show = dev_attr_show, .store = dev_attr_store, }; @@ -252,7 +252,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, return retval; } -static struct kset_uevent_ops device_uevent_ops = { +static const struct kset_uevent_ops device_uevent_ops = { .filter = dev_uevent_filter, .name = dev_uevent_name, .uevent = dev_uevent, @@ -306,15 +306,10 @@ static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, { enum kobject_action action; - if (kobject_action_type(buf, count, &action) == 0) { + if (kobject_action_type(buf, count, &action) == 0) kobject_uevent(&dev->kobj, action); - goto out; - } - - dev_err(dev, "uevent: unsupported action-string; this will " - "be ignored in a future kernel version\n"); - kobject_uevent(&dev->kobj, KOBJ_ADD); -out: + else + dev_err(dev, "uevent: unknown action-string\n"); return count; } @@ -607,6 +602,7 @@ static struct kobject *get_device_parent(struct device *dev, int retval; if (dev->class) { + static DEFINE_MUTEX(gdp_mutex); struct kobject *kobj = NULL; struct kobject *parent_kobj; struct kobject *k; @@ -623,6 +619,8 @@ static struct kobject *get_device_parent(struct device *dev, else parent_kobj = &parent->kobj; + mutex_lock(&gdp_mutex); + /* find our class-directory at the parent and reference it */ spin_lock(&dev->class->p->class_dirs.list_lock); list_for_each_entry(k, &dev->class->p->class_dirs.list, entry) @@ -631,20 +629,26 @@ static struct kobject *get_device_parent(struct device *dev, break; } spin_unlock(&dev->class->p->class_dirs.list_lock); - if (kobj) + if (kobj) { + mutex_unlock(&gdp_mutex); return kobj; + } /* or create a new class-directory at the parent device */ k = kobject_create(); - if (!k) + if (!k) { + mutex_unlock(&gdp_mutex); return NULL; + } k->kset = &dev->class->p->class_dirs; retval = kobject_add(k, parent_kobj, "%s", dev->class->name); if (retval < 0) { + mutex_unlock(&gdp_mutex); kobject_put(k); return NULL; } /* do not emit an uevent for this simple "glue" directory */ + mutex_unlock(&gdp_mutex); return k; } @@ -1574,22 +1578,16 @@ int device_rename(struct device *dev, char *new_name) if (old_class_name) { new_class_name = make_class_name(dev->class->name, &dev->kobj); if (new_class_name) { - error = sysfs_create_link_nowarn(&dev->parent->kobj, - &dev->kobj, - new_class_name); - if (error) - goto out; - sysfs_remove_link(&dev->parent->kobj, old_class_name); + error = sysfs_rename_link(&dev->parent->kobj, + &dev->kobj, + old_class_name, + new_class_name); } } #else if (dev->class) { - error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj, - &dev->kobj, dev_name(dev)); - if (error) - goto out; - sysfs_remove_link(&dev->class->p->class_subsys.kobj, - old_device_name); + error = sysfs_rename_link(&dev->class->p->class_subsys.kobj, + &dev->kobj, old_device_name, new_name); } #endif |